AirHint found the following cheapest one-way flights from Seoul (ICN) to Lisbon (LIS) in August 2025 (see full year).

One-Way flights

26 Aug	Etihad Airways
19 Aug	Etihad Airways
30 Aug	Etihad Airways
05 Aug	Etihad Airways
27 Aug	Etihad Airways
25 Aug	Etihad Airways
04 Aug	Hainan Airlines
12 Aug	Etihad Airways
24 Aug	Shenzhen Airlines
06 Aug	Etihad Airways

Also check the deals for return flights from Seoul to Lisbon in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest one-way flights from Seoul to Lisbon in August from 324€

One-Way flights